Eobebt b



(No Model.)

-R. B. SEYMOUR.

LEVELING ROD. No. 310,731. Patented Jan. 13, 1885.

(fig, A

o i I' v i WITNESSES: INYENTOR:

' y p g BY ail '5 ATTORNEYS.

A UNITED STATES PATENT OFEIcE.

ROBERT B. SEYMOUR, OF VVILLETS POINT, NEWYORK.

LEVELING-RO D.

SPECIFICATION forming part of Letters Patent No. 310,731, dated January 13, 1885.

Application filed August 19, 1884. (No model.)

To all whom it may concern.-

Be it known that I, ROBERT B. SEYMOUR, of Willets Point, in the county of Queens and State of New York, have invented a new and useful Improvement in LevelingRods, of which the following is a full, clear, and exact description. I

Reference is to be had to the accompanyin drawings, forming apart of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a rear elevation of a part of a leveling-rod to which my improvement has been applied. Fig. 2 is a side elevation of the same, part being broken away.

The object of this invention is to facilitate the adjustment of the targets of leveling-rods and promote accuracy in such adjustments.

The invention consists in a leveling-rod constructed with a friction-roller connected with the keeper that connects the target with the rod, so that the target can be easily and accurately adjusted upon the said rod. The friction-roller is journaled to bars secured to the keeper by fastening-screws, and which are slotted to receive the said screws, so that the said roller can be readily adjusted to bear with any desired force against the rod, as will be hereinafter fully described.

A is the rod. B is the target. 0 is a keeper attached to the rear side of the target, to slide upon the rod A. D is a hand screw which passes through a screw-hole in the keeper 0, and has a small plate, E, swiveled to its forward end to rest against the rear side of the rod A, to prevent the said rod from being marred when the hand-screw D is turned forward to lock the target B in place.

The keeper 0 is made a little larger than the rod A, so that it will move freely,.and'the side play is taken up by a spring, F, placed between the side of the said rod and the side of the said keeper, and secured at its center to the said keeper. The arms of the spring 5 F are bent inward and then outward to cause them to bear firmly against the rod A and al low them to slide upon the. said rod without marring it.

To the lower parts of the sides of the keeper 0 are secured by screws G the bars H, which are slotted to receive the said screws G and allow the said bars to be moved out and in.

To the outer ends of the bars H is journaled a roller, I, which may be made of wood, metal, or other suitable material, and may be faced with rubber or other suitable material, if desired. One of the journals of the roller I projects and is provided with a thumb-wheel, J, for convenience in operating the said roller.

If desired, the roller I can be held against the rod A by springs attached to the keeper O, and provided with hearings to receive the journals of the roller I.

With this construction, by loosening the locking-screw D and turning the roller I, the target can be moved up and down upon the rod A, and can be stopped at any desired point, so that an accurate adjustment can be readily obtained.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a leveling-rod, the combination, with the rod A, target B, and keeper 0, of a fric tion roller, I, and a connecting mechanism, substantially as herein shown and described, whereby the said target can be easily and accurately adjusted upon the said rod, as set forth.

2. In a leveling-rod, the combination, with the rod A, target B, keeper 0, and friction roller 1, of the slotted bearing-bars H and the fastening-screws G, substantially as herein shown and described, whereby the said roller can be readily adjusted to bear with any desired force against the said rod, as set forth.

ROBERT B. SEYMOUR.

WVitnesses:

JAMES T. GRAHAM, O. SEDGWIOK. 

